Johann schiffer



(No Model.)

J. SGHIPFER. DRAFT EQUALIZER.

No. 539,087. v PatentedMay 14-,18 95.

PAT NT OFFICE.

J OHANN SOHIFFER, OF DUSSELDORF, GERMANY.

DRAFT-EQUALIZER.

SPECIFICATION forming part of Letters Patent No. 539,087, dated May 14, 1895.

Application filed November 9, 1894. Serial No. 528,301. (No model.)

view thereof; Fig. 3, an elevation thereof,

showing the springs compressed; Fig. 4, an elevation of a modification, and Fig. 5 a sectional detail of the springs.

The letter (t, represents a curved Whiffietree or evener, to the ends of which the twoarmed levers or single bars b, are pivoted in such a way that the inner lever arms project over the evener bar, while the outer lever arms project laterally beyond such bar. The inner ends I), of the bars I), bear upon the forward ends of coiled springs f, the rear ends of which are seated upon the whiffletree a. The springs f, surround preferably plungers f, secured to the single bars I), and reciprocate within cylinders f secured to the Whitfietree a, (Fig. 5) and which serve to stiffen the springs. The two inner ends I), of the two bars I), are connected by a flexible band 5, of leather or similar material, which prevents the springs from catching into the harness.

It is evident that the invention may be applied to single bars and double bars. In Fig. 4, the double bars 0, are secured to the laterally extended ends b ofthe levers b. The double bars are in this modification shown to be laterally adjustable, in order to regulate the power of the springs. It will be seen, that by my invention a pull on the traces will compress the springs andfacilitate the starting of the load. Moreover the springs will act as cushions that are interposed between the load and the draft animals, to check the transmission of bumps to the latter.

What I claim is- 1. The combination of a curved whiffletree with a pair of levers pivoted to its ends, and a pair of coiled springs extending from the inner ends of the levers to the whiftletree, substantially as specified.

2. The combination of a curved whiffietre'e with a pair of levers pivoted to its ends, interposed coiled springs, pistons secured to the inner ends of the levers within the springs, and cylinders secured to the whiffietree and adapted to receive said pistons, substantially as specified.

In testimony whereof I have signed this specification'in the presence of two subscribing witnesses.

JOHANN SCHIFFER.

Witnesses:

WM. ESSENWEIN, E. ANDRE. 

